TY - JOUR
T1 - An investigation of compressible turbulent forced convection by an implicit turbulence model for large eddy simulation
AU - Fu, Wu Shung
AU - Li, Chung Gang
AU - Tsubokura, Makoto
AU - Huang, Yun
AU - Domaradzki, J. A.
N1 - Funding Information:
Received 3 October 2012; accepted 7 May 2013. The authors gratefully acknowledge the support of the Natural Science Council, Taiwan, ROC under contract NSC97-2221-E-009-144, and the National Center for High-Performance Computing of Taiwan, ROC. Address correspondence to Wu-Shung Fu, Department of Mechanical Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, 30056, Taiwan, Republic of China. E-mail: [email protected]
PY - 2013
Y1 - 2013
N2 - An investigation of compressible turbulent forced convection in a three-dimensional channel flow is studied numerically by an implicit turbulence model for large eddy simulation (LES). Because of a high temperature difference between two walls and turbulent flow, the compressibility and viscosity of fluid should be taken into consideration simultaneously. Methods of the Roe scheme, preconditioning, and dual time stepping coordinating an implicit turbulence model for LES are used for resolving the effect of the compressibility of fluid on a low speed flow field. The magnitudes of Res based on the friction velocity changing from 180 to 940, with the high temperature difference of two walls of 500 k are conducted. The results of the mean velocity profiles and turbulent intensities are in good agreement with the benchmark DNS data obtained by spectral codes from a low Reynolds number (Res=180) to a high Reynolds number (Res=940). Besides, the larger the Res is, with the exception of acquirement of larger average Nusselt number, the more drastic variation of local instantaneous Nusselt number is observed.
AB - An investigation of compressible turbulent forced convection in a three-dimensional channel flow is studied numerically by an implicit turbulence model for large eddy simulation (LES). Because of a high temperature difference between two walls and turbulent flow, the compressibility and viscosity of fluid should be taken into consideration simultaneously. Methods of the Roe scheme, preconditioning, and dual time stepping coordinating an implicit turbulence model for LES are used for resolving the effect of the compressibility of fluid on a low speed flow field. The magnitudes of Res based on the friction velocity changing from 180 to 940, with the high temperature difference of two walls of 500 k are conducted. The results of the mean velocity profiles and turbulent intensities are in good agreement with the benchmark DNS data obtained by spectral codes from a low Reynolds number (Res=180) to a high Reynolds number (Res=940). Besides, the larger the Res is, with the exception of acquirement of larger average Nusselt number, the more drastic variation of local instantaneous Nusselt number is observed.
UR - https://www.scopus.com/pages/publications/84884480057
UR - https://www.scopus.com/pages/publications/84884480057#tab=citedBy
U2 - 10.1080/10407782.2013.807663
DO - 10.1080/10407782.2013.807663
M3 - Article
AN - SCOPUS:84884480057
SN - 1040-7782
VL - 64
SP - 858
EP - 878
JO - Numerical Heat Transfer; Part A: Applications
JF - Numerical Heat Transfer; Part A: Applications
IS - 11
ER -